Improving
A 1 micron filter and adding your top-off as kalkwasser will help some,but if you have much disolved metals etc it won't be good enough.
Kalk will ppt some phos etc and the micron filter will remove large organics. Maybe OK here (tapwater less than 25ppm) for some of the year, but nobody I know has lasted the year algea free without RO.
In the long run....a very very well spent $100. (Aquasafe)
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John
its all about quality, not quantity.....
...when in doubt buy a Binford....
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